Internet Engineering Task Force (IETF) M. Goyal, Ed.
Request for Comments: 6997 Univ. of Wisconsin Milwaukee
Category: Experimental E. Baccelli
ISSN: 2070-1721 M. Philipp
INRIA
A. Brandt
Sigma Designs
J. Martocci
Johnson Controls
August 2013
Reactive Discovery of Point-to-Point Routes
in Low-Power and Lossy Networks
Abstract
This document specifies a point-to-point route discovery mechanism,
complementary to the Routing Protocol for Low-power and Lossy
Networks (RPL) core functionality. This mechanism allows an IPv6
router to discover "on demand" routes to one or more IPv6 routers in
a Low-power and Lossy Network (LLN) such that the discovered routes
meet specified metrics constraints.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for examination, experimental implementation, and
evaluation.
This document defines an Experimental Protocol for the Internet
community. This document is a product of the Internet Engineering
Task Force (IETF). It represents the consensus of the IETF
community. It has received public review and has been approved for
publication by the Internet Engineering Steering Group (IESG). Not
all documents approved by the IESG are a candidate for any level of
Internet Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6997.
Goyal, et al. Experimental [Page 1]RFC 6997 Reactive P2P Route Discovery: P2P-RPL August 2013Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Goyal, et al. Experimental [Page 2]RFC 6997 Reactive P2P Route Discovery: P2P-RPL August 2013Table of Contents
1. Introduction ....................................................4
2. The Use Cases ...................................................4
3. Terminology .....................................................5
4. Applicability ...................................................6
5. Functional Overview .............................................7
6. P2P Route Discovery Mode of Operation ..........................10
6.1. Setting a P2P Mode DIO ....................................10
7. P2P Route Discovery Option (P2P-RDO) ...........................15
8. The P2P Discovery Reply Object (P2P-DRO) .......................18
8.1. Secure P2P-DRO ............................................20
8.2. Setting a P2P-RDO Carried in a P2P Discovery Reply
Object ....................................................21
9. P2P-RPL Route Discovery by Creating a Temporary DAG ............21
9.1. Joining a Temporary DAG ...................................21
9.2. Trickle Operation for P2P Mode DIOs .......................22
9.3. Processing a P2P Mode DIO .................................24
9.4. Additional Processing of a P2P Mode DIO at an
Intermediate Router .......................................26
9.5. Additional Processing of a P2P Mode DIO at the Target .....27
9.6. Processing a P2P-DRO at an Intermediate Router ............28
9.7. Processing a P2P-DRO at the Origin ........................30
10. The P2P Discovery Reply Object Acknowledgement (P2P-DRO-ACK) ..31
11. Secure P2P-RPL Operation ......................................32
12. Packet Forwarding along a Route Discovered Using P2P-RPL ......33
13. Interoperability with Core RPL ................................34
datatracker.ietf.org